Java壓縮和解壓文件工具類ZipUtil

用于服務器端打包文件的，將壓縮后的文件寫入到response輸出流即可實現在服務器端打包下載，支持多級目錄嵌套。
測試時可以先用ZipUtil.zip壓縮某個文件夾test，得到壓縮文件test.zip，然后將文件夾test刪除，用ZipUtil.unzip解壓test.zip即可還原。

PS：需要解決中文亂碼的朋友可以參考此處 http://log-cd.iteye.com/blog/585647

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

/**

通過Java的Zip輸入輸出流實現壓縮和解壓文件

@author liujiduo
*/
public final class ZipUtil {
private static byte[] buffer = new byte[1024 * 10];
private ZipUtil() {

 // empty

}
/**

壓縮文件

@param filePath
待壓縮的文件路徑
@return 壓縮后的文件
*/
public static File zip(String filePath) {
 File target = null;
 File source = new File(filePath);
 if (source.exists()) {

 // 壓縮文件名=源文件名.zip
 String zipName = source.getName() + ".zip";
 target = new File(source.getParent(), zipName);
 if (target.exists()) {
     target.delete(); // 刪除舊的文件
 }
 FileOutputStream fos = null;
 ZipOutputStream zos = null;
 try {
     fos = new FileOutputStream(target);
     zos = new ZipOutputStream(new BufferedOutputStream(fos));
     // 添加對應的文件Entry
     addEntry("/", source, zos);
 } catch (IOException e) {
     throw new RuntimeException(e);
 } finally {
     IOUtil.closeQuietly(zos, fos);
 }

}
 return target;
}
/**

掃描添加文件Entry

@param base
基路徑

@param source
源文件
@param zos
Zip文件輸出流
@throws IOException
*/
private static void addEntry(String base, File source, ZipOutputStream zos)

 throws IOException {

// 按目錄分級，形如：/aaa/bbb.txt
 String entry = base + source.getName();
 if (source.isDirectory()) {

 for (File file : source.listFiles()) {
     // 遞歸列出目錄下的所有文件，添加文件Entry
     addEntry(entry + "/", file, zos);
 }

} else {

 FileInputStream fis = null;
 BufferedInputStream bis = null;
 try {
     fis = new FileInputStream(source);
     bis = new BufferedInputStream(fis, buffer.length);
     int read = 0;
     zos.putNextEntry(new ZipEntry(entry));
     while ((read = bis.read(buffer, 0, buffer.length)) != -1) {
         zos.write(buffer, 0, read);
     }
     zos.closeEntry();
 } finally {
     IOUtil.closeQuietly(bis, fis);
 }

}
}
/**

解壓文件

@param filePath
壓縮文件路徑
*/
public static void unzip(String filePath) {
File source = new File(filePath);
if (source.exists()) {
ZipInputStream zis = null;
BufferedOutputStream bos = null;
try {
zis = new ZipInputStream(new FileInputStream(source));
ZipEntry entry = null;
while ((entry = zis.getNextEntry()) != null && !entry.isDirectory()) {
  File target = new File(source.getParent(), entry.getName());
  if (!target.getParentFile().exists()) {

  // 創建文件父目錄
  target.getParentFile().mkdirs();

}
  // 寫入文件
  bos = new BufferedOutputStream(new FileOutputStream(target));
  int read = 0;
  while ((read = zis.read(buffer, 0, buffer.length)) != -1) {

  bos.write(buffer, 0, read);

}
  bos.flush();
}
zis.closeEntry();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
IOUtil.closeQuietly(zis, bos);
}
}
}
public static void main(String[] args) {
String targetPath = "E:\Win7壁紙";
File file = ZipUtil.zip(targetPath);
System.out.println(file);
ZipUtil.unzip("F:\Win7壁紙.zip");
}
}</pre> 
import java.io.Closeable;
import java.io.IOException;





/**

IO流工具類

@author liujiduo
*/
public class IOUtil {
 /**

關閉一個或多個流對象

@param closeables
可關閉的流對象列表
@throws IOException
*/
public static void close(Closeable... closeables) throws IOException {
 if (closeables != null) {

 for (Closeable closeable : closeables) {
     if (closeable != null) {
         closeable.close();
     }
 }

}
}
/**

關閉一個或多個流對象

@param closeables
可關閉的流對象列表
*/
public static void closeQuietly(Closeable... closeables) {
try {
close(closeables);
} catch (IOException e) {
// do nothing
}
}



}</pre>